html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
}

.video-section {
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 0;
    padding: 20px 0;
}

.page-video {
    display: block;
    width: 100%;
    max-width: 1172px;  /* desktop size; shrinks automatically on smaller screens */
    height: auto;       /* keeps the video's own proportions */
    max-height: 90vh;   /* keeps the video from being taller than the screen */
}